BOS - MSO

$195 Find Cheap Flights from Boston to Missoula - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Missoula departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Missoula

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Missoula, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Missoula, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$421
Typical prices: $559-$804
Delta
Tue 8/18Tue 8/25
BOS - MSO • 1 stop
Cheapest one-way
$195
Typical prices: $216-$350
Multiple Airlines
Wed 9/23
BOS - MSO • 2 stops
Top airlines
Cheapest • from $421 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boston and Missoula. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $596 (round-trip)
Shortest trip • 7h 52m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 24% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 31% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Missoula!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Missoula (BOS-MSO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Missoula that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Missoula

Tue, Aug 18 - Tue, Aug 25
Delta Logo
6:05 am - 12:36 pm
BOS
-
MSO
8h 31m
1 stop
Delta Logo
6:00 am - 5:05 pm
MSO
-
BOS
9h 05m
1 stop
$421Delta
Sat, Sep 5 - Tue, Sep 8
Alaska Airlines Logo
9:33 am - 1:25 pm
BOS
-
MSO
29h 52m
1 stop
Alaska Airlines Logo
4:16 pm - 7:39 am
MSO
-
BOS
13h 23m
1 stop
$427Alaska Airlines
Sat, Sep 12 - Sat, Sep 19
Alaska Airlines Logo
7:12 am - 3:17 pm
BOS
-
MSO
10h 05m
1 stop
Alaska Airlines Logo
1:19 pm - 6:09 am
MSO
-
BOS
14h 50m
1 stop
$433Alaska Airlines
Tue, Aug 18 - Fri, Aug 21
American Airlines Logo
5:51 am - 12:35 pm
BOS
-
MSO
8h 44m
1 stop
American Airlines Logo
1:25 pm - 11:37 pm
MSO
-
BOS
8h 12m
1 stop
$440American Airlines
Sat, Sep 5 - Wed, Sep 9
American Airlines Logo
5:51 am - 12:35 pm
BOS
-
MSO
8h 44m
1 stop
American Airlines Logo
12:45 pm - 10:27 pm
MSO
-
BOS
7h 42m
1 stop
$446American Airlines
Tue, Aug 18 - Tue, Aug 25
American Airlines Logo
5:51 am - 12:35 pm
BOS
-
MSO
8h 44m
1 stop
American Airlines Logo
1:25 pm - 7:19 am
MSO
-
BOS
15h 54m
2 stops
$454American Airlines
Mon, Aug 24 - Sat, Aug 29
Delta Logo
7:10 am - 2:43 pm
BOS
-
MSO
9h 33m
1 stop
Delta Logo
6:27 pm - 6:30 am
MSO
-
BOS
10h 03m
1 stop
$456Delta
Fri, Aug 28 - Tue, Sep 1
Delta Logo
6:18 pm - 11:47 pm
BOS
-
MSO
7h 29m
1 stop
Delta Logo
6:27 pm - 6:30 am
MSO
-
BOS
10h 03m
1 stop
$461Delta
Sat, Sep 5 - Wed, Sep 9
United Airlines Logo
12:15 pm - 8:01 pm
BOS
-
MSO
9h 46m
1 stop
United Airlines Logo
6:15 am - 5:52 pm
MSO
-
BOS
9h 37m
2 stops
$463United Airlines
Mon, Nov 9 - Wed, Nov 18
United Airlines Logo
3:25 pm - 9:35 pm
BOS
-
MSO
8h 10m
1 stop
United Airlines Logo
6:15 am - 5:33 pm
MSO
-
BOS
9h 18m
2 stops
$468United Airlines
Booking Insights

KAYAK's insights & trends for Boston to Missoula flights

Get data-powered insights and trends into flights from Boston to Missoula to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Boston to Missoula?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Missoula departing in August.

What is the cheapest month to fly from Boston to Missoula?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Missoula, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Missoula is February, where tickets cost $382 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $702 and $693 respectively.

How far in advance should I book a flight from Boston to Missoula?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Missoula, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Missoula, you should book around 2 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$195
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Boston to Missoula

When to book flights from Boston to Missoula

Are your dates flexible? Find out the best times to travel from Boston to Missoula based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Missoula

  • What is the cheapest flight from Boston to Missoula?

    In the last 5 days, the lowest price for a flight from Boston to Missoula was $195 for a one-way ticket and $421 for a round-trip.

  • Do I need a passport to fly between Boston and Missoula?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Boston to Missoula?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Missoula?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Boston and Missoula, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Boston to Missoula, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Boston to Missoula are Alaska Airlines and Delta. With an average price for the route of $483 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $537 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Boston to Missoula?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Missoula.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Missoula?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Missoula from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Missoula?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Missoula with an airline and back to Boston with another airline. Booking your flights between Boston and MSO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Missoula?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Missoula from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Boston to Missoula

 
See real verified KAYAK customer reviews for airlines flying from Boston to Missoula. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Missoula? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12590 reviews
8.5Crew
7.8Comfort
7.0Food
7.0Entertainment
8.1Boarding
Airline reviews

We had the bulkhead seats in back of the first class section and there was a rigid plastic barrier which made it very hard to get in and out of our seats. We paid extra for the bulkhead and got neither extra room nor he's getting up. We were very disappointed.

8.0 ExcellentJoan, Jun 2026
BOS - PDX
Read more Alaska Airlines reviews

We had the bulkhead seats in back of the first class section and there was a rigid plastic barrier which made it very hard to get in and out of our seats. We paid extra for the bulkhead and got neither extra room nor he's getting up. We were very disappointed.

Didn’t even get on, check my flight to Seattle for details. Do better Alaska.

Nice to get moved from a middle seat to an aisle seat upon request, but why wasn’t I put in an aisle seat to begin with? The flight was not full.

The merging of Kayak & the airline’s website was not always clear. Both on their own provided adequate Information about the flight. I had some challenges retrieving the boarding pass. I relied on the agent & may have paid the baggage fee twice.

Hello, Our flight arrived late, and the flight we were to connect to the departure time was moved up. At first our flight was scheduled to arrive at 10:40, but it arrived at 10:56. Our connecting flight was scheduled to leave at 11:25, and it was moved to 11:20. Also the terminal was moved from N to S. N would have been in the same terminal as the one we arrived in-- to get to S we had to take 3 trains to get to. And when we arrived at the gate, around 11:15, they said the gate was closed and would not open it. We had come from a funeral in Boston, and the person that helped us get new tickets said, "did you come from a girsl trip?" No, we did not. We were coming from a funeral. This experience was not what we expected/wanted. My friend, because she had to run to S, got a migraine and turned pale. In addition, I paid an extra $70 for an aisle seat that was more upfront, to make sure I can get off the plane faster and make the connecting flight. The fact that the plane not only did not wait, but left earlier, is absolutely unacceptable. This was a terrible experience, and I hope that I can be refunded for this horrible experience.

Generally very good. Waiting (due to de-icing and traffic) in plane to take off was a put-off. But it's not the airline's fault. I find Airbus more comfortable than Boeing.

Smooth flight, on time despite Captain’s forecast of troublesome weather conditions.

I liked that it didn't take 10 hours to drive here. Super short trip!

another delayed flight. no one at the desk kept us updated. we found out by an email as the desk was not even staffed up to expected takes off

The flight was delayed due to staff shortage and they efficiently fixed the problem with only 20 minutes delay time. All went smoothly (especially the landing) and passengers were great. Best job landing ever - never felt a bump!

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

The flight was smooth, the crew was great but the plane was quite old

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Cabin was not pressurized properly. Several passengers had respiratory difficulties.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

The flight was delayed, they didn’t even have water for the toilets or for drinks

It’s always a great time flying with united airlines.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Attendants zipped through cabin so fast hardly anyone got the water they told us we could have in the short flight. Nothing else was offered.

Terrible boarding and first class experience. Nice staff but overall disorganized, dirty plane.

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

Early departure meant on time arrival. Only real problem was free internet had issues, although chatting with the internet help desk (you can do this via aainflight.com) got the issue resolved.

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

Great experience. Good dinner and service. FA's were very nice and attentive.

Jill was the flight attendant in first class she was fabulous!! Best flight attendant I have had in years.!! And I fly every other week. Other can learn from her!!

The business steward was absolutely amazing! Smiles and kindness! Wish all AA flights are like this one!

Never going to fly your airline again if it can be avoided.

Worst experience ever. Flight could not land in Charlotte for what we were told was a ground stop. Had to be diverted to Raleigh to refuel. Strangely during ground stop, our connecting flight had no issue taking off on time causing us to miss our flight. We were told there were no other flights that day to our final destination and that two days out was the next one. The only flights to get us there were from Chicago the next morning. Completely opposite direction but it was a direct flight. So we get flown to Chicago and have to find a hotel in our own dime. The flight in the morning was also delayed. Thankfully only a short time. The non too of all this, our luggage did not arrive by the time we were there. Communication was terrible, through the entire trip. Complete incompetence. Will never fly American again.

Everything you need to know for your flight from Boston to Missoula

Information on your arrival and departure airports